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CY54FCT540T_15 Datasheet, PDF (1/12 Pages) Texas Instruments – 8-BIT BUFFERS/LINE DRIVERS WITH 3-STATE OUTPUTS
D Function, Pinout, and Drive Compatible
With FCT and F Logic
D Reduced VOH (Typically = 3.3 V) Versions
of Equivalent FCT Functions
D Edge-Rate Control Circuitry for
Significantly Improved Noise
Characteristics
D Ioff Supports Partial-Power-Down Mode
Operation
D ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
D Matched Rise and Fall Times
D Fully Compatible With TTL Input and
Output Logic Levels
D CY54FCT540T
– 48-mA Output Sink Current
– 12-mA Output Source Current
D CY74FCT540T
– 64-mA Output Sink Current
– 32-mA Output Source Current
D 3-State Outputs
description
CY54FCT540T, CY74FCT540T
8-BIT BUFFERS/LINE DRIVERS
WITH 3-STATE OUTPUTS
SCCS029A – MAY 1994 – REVISED OCTOBER 2001
CY54FCT540T . . . D PACKAGE
CY74FCT540T . . . Q PACKAGE
(TOP VIEW)
OEA 1
D0 2
D1 3
D2 4
D3 5
D4 6
D5 7
D6 8
D7 9
GND 10
20 VCC
19 OEB
18 O0
17 O1
16 O2
15 O3
14 O4
13 O5
12 O6
11 O7
CY54FCT540T . . . L PACKAGE
(TOP VIEW)
D2
3 2 1 20 19
4
18 O0
D3 5
17 O1
D4 6
16 O2
D5 7
15 O3
D6
8
14
9 10 11 12 13
O4
The ’FCT540T inverting buffers/line drivers can
be employed as memory address drivers, clock
drivers, and bus-oriented transmitters/receivers.
These devices provide speed and drive capabili-
ties equivalent to their fastest bipolar-logic
counterparts, while reducing power dissipation.
The input and output voltage levels allow direct
interface with TTL, NMOS, and CMOS devices
without external components.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the
outputs, preventing damaging current backflow through the device when it is powered down.
ORDERING INFORMATION
TA
PACKAGE†
SPEED
(ns)
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
–40°C to 85°C QSOP – Q Tape and reel
4.1 CY74FCT540CTQCT FCT540C
CDIP – D
–55°C to 125°C
LCC – L
Tube
Tube
4.7 CY54FCT540CTDMB
4.7 CY54FCT540CTLMB
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2001, Texas Instruments Incorporated
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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